package cn.tedu.springmvc.util;

public class JsonResult <T>{
    private Integer state;//业务返回码
    private String message;//消息
    private T data;//数据

    //私有的构造方法(不能new)
    private JsonResult() { }

    public static JsonResult<Void> ok(){
        return ok(null);
    }

    public static <T> JsonResult<T> ok(T data){
        JsonResult<T> jsonResult=new JsonResult<>();
        jsonResult.state=State.OK.getValue();
        jsonResult.data=data;
        return jsonResult;
    }

    public static JsonResult<Void> fail(State state,String message){
        JsonResult<Void> jsonResult=new JsonResult<>();
        jsonResult.state=state.getValue();
        jsonResult.message=message;
        return jsonResult;
    }

    //枚举
    public enum State{
        OK(2000),
        ERR_USERNAME(40400),
        ERR_PASSWORD(40600);
        Integer  value;

        State(Integer  value) {
            this.value=value;
        }

        public Integer getValue() {
            return value;
        }

        public void setValue(Integer value) {
            this.value = value;
        }
    }


    public Integer getState() {
        return state;
    }

    public void setState(Integer state) {
        this.state = state;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }
}
